Reactor for chemical-looping combustion
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United States of America Patent
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Jun 2, 2020
Grant Date -
Aug 27, 2015
app pub date -
Feb 25, 2015
filing date -
Feb 26, 2014
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Abstract
Systems and methods are provided for enhancement of gaseous CLC in a fixed-bed process, marked by an increase in CO2 capture efficiency and oxygen carrier utilization, while reducing disadvantages of a conventional fixed-bed operation. The disclosed systems/methods provide a CLC fixed-bed reactor design in which the direction of the fuel gas is intermittently reversed during a single fuel oxidation step. In this reverse-flow mode, oxygen carrier reduction reactions are displaced over the ends of the reactor, which increases contact between fuel and oxidized solids and alleviates and/or mitigates problems of carbon deposition encountered by most oxygen carriers.
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